{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "cell line", "protein", "RNA", "cell type"], "input": "To study the transcription factor requirement in B-cells , different U2 enhancer constructions were transfected into the lymphoid cell line , BJA-B ."}
{"DNA": ["U2 enhancer constructions"], "cell line": ["lymphoid cell line", "BJA-B"], "protein": ["transcription factor"], "RNA": [], "cell type": ["B-cells"]}